Unpack Bin file problem

[mark4444az]

I'm novice level and in a little over my head on this one. I have some code (run from cygwin)where I unpack a bin file to a text file:

open (OUTFILE, ">bin.txt") or die "Can't open new text file! \n" , &cl
+ean_up;      # Make temp text file to unpack the bin file
    
    open (INFILE, "$bin_file_name") or die "Can't open nvm file! \n" ,
+ &clean_up;      # Open nvm binary file
    #### This unpacks the binary file and puts it in a text file bin.t
+xt ####
    my @lines = unpack ("W*", <INFILE>);
    my $line;
    foreach $line (@lines)
     {
      print OUTFILE sprintf("%02X", $line);
     }
    close (OUTFILE);
    close (INFILE);

The &clean_up sub just removes files and that works fine. The problem I have is when I unpacked a bin file it stopped printing on 0x0A, which is an ascii line feed. I changed it to an 0x0B and it worked fine. This makes me think that my printout is content sensitive, which would be BAD. I further suspect that the W* may be the wrong way to go on this. Any suggestions?